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Sunset (2) - Sol 24
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This image of the Martian sunset from Sol 24 shows much more color variation than had previously been seen. The blue color near the Sun is not caused by clouds of water ice, but by the Martian dust itself. The dust in the atmosphere absorbs blue light, giving the sky its red color, but it also scatters some of the blue light into the area just around the Sun because of its size. The blue color only becomes apparent near Sunrise and Sunset, when the light has to pass through the largest amount of dust.
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(Dettagli)
